HD74AC153T中文资料

HD74AC153
Dual 4-Input Multiplexer
ADE-205-370 (Z)
1st. Edition
Sep. 2000 Description
The HD74AC153 is a high-speed dual 4-input multiplexer with common select inputs and individual enable inputs for each section. It can select two lines of data from four sources. The two buffered outputs present data in the true (noninverted) form. In addition to multiplexer operation, the HD74AC153 can act as a function generator and generate any two functions of three variables.
Feature
• Outputs Source/Sink 24 mA
Pin Arrangement
HD74AC153
2
Logic Symbol
Pin Names
I 0a to I 3a Side A Data Inputs I 0b to I 3b Side B Data Inputs S 0, S 1Common Select Inputs E a Side A Enable Input E b Side B Enable Input Z a Side A Output Z b
Side B Output
Functional Description
The HD74AC153 is a dual 4-input multiplexer. It can select two bits of data from up to four sources under the control of the common Select inputs (S 0, S 1). The two 4-input multiplexer circuits have individual active-Low Enables (E a , E b ) which can be used to strobe the outputs independently. When the Enables (E a ,E b ) are High, the corresponding outputs (Z a , Z b ) are forced Low. The HD74AC153 is the logic implementation of a 2-pole, 4-position switch, where the position of the switch is determined by the logic levels supplied to the two Select inputs. The logic equations for the outputs are shown below.Z a = E a •(I 0a •S 1•S 0 + I 1a •S 1•S 0 + I 2a •S 1•S 0 + I 3a •S 1•S 0)Z b = E b •(I 0b •S 1•S 0 + I 1b •S 1•S 0 + I 2b •S 1•S 0 + I 3b •S 1•S 0)
HD74AC153
3
Truth Table
Select Inputs Input (a or b)Output S 0S 1E I 0I 1I 2I 3Z X X H X X X X L L L L L X X X L L L L H X X X H H L L X L X X L H L L X H X X H L H L X X L X L L H L X X H X H H H L X X X L L H H
L
X
X
X
H
H
H :High Voltage Level L :Low Voltage Level X :
Immaterial
HD74AC153
4
Logic Diagram
DC Characteristics (unless otherwise specified)
Item
Symbol Max Unit Condition
Maximum quiescent supply current I CC 80µA V IN = V CC or ground, V CC = 5.5 V,Ta = Worst case
Maximum quiescent supply current
I CC
8.0
µA
V IN = V CC or ground, V CC = 5.5 V,Ta = 25°C
HD74AC153
5
AC Characteristics: HD74AC153
Ta = +25°C C L = 50 pF
Ta = –40°C to +85°C C L = 50 pF Item
Symbol V CC (V)*1Min Typ Max Min Max Unit Propagation delay t PLH
3.3 1.09.515.0 1.017.5ns
S n to Z n
5.0 1.0
6.511.0 1.012.5Propagation delay t PHL 3.3 1.08.514.5 1.016.5ns S n to Z n
5.0 1.0
6.511.0 1.012.0Propagation delay t PLH 3.3 1.08.013.5 1.016.0ns E n to Z n
5.0 1.0 5.59.5 1.011.0Propagation delay t PHL 3.3 1.07.011.0 1.012.5ns E n to Z n
5.0 1.0 5.08.0 1.09.0Propagation delay t PLH 3.3 1.07.512.5 1.014.5ns I n to Z n
5.0 1.0 5.59.0 1.010.5Propagation delay t PHL 3.3 1.07.011.5 1.013.0ns I n to Z n 5.0
1.0
5.0
8.5
1.0
10.0
Note:
1.Voltage Range 3.3 is 3.3 V ± 0.3 V
Voltage Range 5.0 is 5.0 V ± 0.5 V
Capacitance
Item
Symbol Typ Unit Condition Input capacitance
C IN 4.5pF V CC = 5.5 V Power dissipation capacitance
C PD
65.0
pF
V CC = 5.0 V
HD74AC153 Package Dimensions
6
HD74AC153
7
HD74AC153
8
Cautions
1.Hitachi neither warrants nor grants licenses of any rights of Hitachi’s or any third party’s patent,
copyright, trademark, or other intellectual property rights for information contained in this document.Hitachi bears no responsibility for problems that may arise with third party’s rights, including
intellectual property rights, in connection with use of the information contained in this document.2.Products and product specifications may be subject to change without notice. Confirm that you have received the latest product standards or specifications before final design, purchase or use.
3.Hitachi makes every attempt to ensure that its products are of high quality and reliability. However,contact Hitachi’s sales office before using the product in an application that demands especially high quality and reliability or where its failure or malfunction may directly threaten human life or cause risk of bodily injury, such as aerospace, aeronautics, nuclear power, combustion control, transportation,traffic, safety equipment or medical equipment for life support.
4.Design your application so that the product is used within the ranges guaranteed by Hitachi particularly for maximum rating, operating supply voltage range, heat radiation characteristics, installation
conditions and other characteristics. Hitachi bears no responsibility for failure or damage when used beyond the guaranteed ranges. Even within the guaranteed ranges, consider normally foreseeable failure rates or failure modes in semiconductor devices and employ systemic measures such as fail-safes, so that the equipment incorporating Hitachi product does not cause bodily injury, fire or other consequential damage due to operation of the Hitachi product.5.This product is not designed to be radiation resistant.
6.No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without written approval from Hitachi.
7.Contact Hitachi’s sales office for any questions regarding this document or Hitachi semiconductor products.
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